Why oh why do I have morals?!

Every research topic I come across I somehow end up twisting into something that I deem bad for society and therefore irresponsible of me to devote my research energy toward. I was really excited about a supersonic jet problem…until I found out that it was how to design bomb-bay doors such that bombs can be dropped at supersonic speeds. I was getting excited about improving flow visualization and experimental techniques…until I found out they were going to be used on a study for oil flares (I have a difference with the oil and gas industry).

What should I do?